package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.ObjectUtils;


import java.util.UUID;
import java.util.concurrent.TimeUnit;


@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private RedisTemplate<String,Object> redisTemplate;
    @Autowired
    private SystemUserService systemUserService;
    @Override
    public CaptchaVo getCaptcha() {
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);
        String imgBase64 = specCaptcha.toBase64();
        String codeString = specCaptcha.text();
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID().toString().replaceAll("-", "");
        redisTemplate.opsForValue().set(key,codeString,RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        CaptchaVo captchaVo = new CaptchaVo(imgBase64, key);
        return captchaVo;
    }

    @Override
    public String login(LoginVo loginVo) {
        if(ObjectUtils.isEmpty(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }
        String codeString = (String)redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if(ObjectUtils.isEmpty(codeString)){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EXPIRED);
        }
        if(!codeString.equalsIgnoreCase(loginVo.getCaptchaCode())){
            throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        LambdaUpdateWrapper<SystemUser> luw = new LambdaUpdateWrapper<>();
        luw.eq(SystemUser::getUsername,loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(luw);
        if(systemUser==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }else{
            String password = DigestUtils.md5Hex(loginVo.getPassword());
            if(!systemUser.getPassword().equals(password)){
                throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
            }
            if(systemUser.getStatus() == BaseStatus.DISABLE){
                throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
            }
        }
        return JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());

    }
}
